<template>
  <div>
    <transition name="move">
      <div v-show="showFlag" class="food" ref="food">
        <div class="food-content">
          <div class="image-header">
            <img :src="food.image"/>
            <div class="back" @click="hide">
              <i class="icon-arrow_lift"></i>
            </div>
          </div>
          <div class="content">
            <h1 class="title">{{food.name}}</h1>
            <div class="detail">
              <span class="sell-count">月售{{food.sellCount}}份</span>
              <span class="rating">好评率{{food.rating}}%</span>
            </div>
            <div class="price">
              <!--贴在一起解决间隙问题-->
              <span class="now">¥{{food.price}}</span><span class="old" v-show="food.oldPrice">¥{{food.oldPrice}}</span>
            </div>
            <div class="cartcontrol-wrapper">
              <cartcontrol :food="food" @cartAdd="addGood"></cartcontrol>
            </div>
            <transition name="fade">
              <div @click.stop.prevent="addFirst" class="buy" v-show="!food.count || food.count===0">加入购物车</div>
            </transition>
          </div>
          <!--分割线,多处使用故做成简单组件.-->
          <split v-show="food.info"></split>
          <div class="info" v-show="food.info">
            <h1 class="title">商品信息</h1>
            <p class="text">{{food.info}}</p>
          </div>
          <split v-show="food.info"></split>
          <div class="rating">
            <h1 class="title">商品评价</h1>
            <ratingselect :select-type="selectType" :only-content="onlyContent"
                          :desc="desc" :ratings="food.ratings"
                          @ratingtype-select="onSelect" @content-toggle="onToggle"></ratingselect>
            <div class="rating-wrapper">
              <ul v-show="food.ratings && food.ratings.length">
                <li v-show="needShow(rating.rateType,rating.text)" class="rating-item border-1px"
                    v-for="rating in food.ratings">
                  <div class="user">
                    <span class="name">{{rating.username}}</span>
                    <img class="avatar" width="12" height="12" :src="rating.avatar"/>
                  </div>
                  <div class="time">{{rating.rateTime | formateDate}}</div>
                  <p class="text">
                    <span
                      :class="{'icon-thumb_up':rating.rateType===0,'icon-thumb_down':rating.rateType===1}"></span>{{rating.text}}
                  </p>
                </li>
              </ul>
              <div class="no-rating" v-show="!food.ratings || !food.ratings.length">
                <span>暂无评价</span>
              </div>
            </div>
          </div>
        </div>
      </div>
    </transition>
  </div>
</template>

<script type="text/ecmascript-6">
  import { formatDate } from 'common/js/date.js';
  import Vue from 'vue';
  import BScroll from 'better-scroll';
  import cartcontrol from 'components/cartcontrol/cartcontrol';
  import split from 'components/split/split';
  import ratingselect from 'components/ratingselect/ratingselect';

  //    const POSITIVE = 0;
  //  const NEGATIVE = 1;
  const ALL = 2;

  export default{
    props: {
      food: {
        type: Object
      }
    },
    data() {
      return {
        showFlag: false,
        selectType: ALL,
        onlyContent: true,
        desc: {
          all: '全部',
          positive: '推荐',
          negative: '吐槽'
        }
      };
    },
    methods: {
      // show方法可以给父组件goods调用,从而改变food页面显示和隐藏.
      show() {
        this.showFlag = true;
        this.selectType = ALL;
        this.onlyContent = true;
        this.$nextTick(() => {
          if (!this.scroll) {
            this.scroll = new BScroll(this.$refs.food, {
              click: true
            });
          } else {
            this.scroll.refresh();
          }
        });
      },
      hide() {
        this.showFlag = false;
      },
      addFirst(event) {
        if (!event._constructed) {
          return;
        }
        Vue.set(this.food, 'count', 1);
        this.$emit('foodChange', this.food); // 通知父组件goods,然后又goods通知另一个子组件shopcart更新其数量总价等.
        this.addGood(event.target);
      },
      addGood(target) {
        this.$emit('addGood', target);
      },
      needShow(type, text) {
        if (this.onlyContent && !text) {
          return false;
        }
        if (this.selectType === ALL) {
          return true;
        } else {
          return type === this.selectType;
        }
      },
      onSelect(type) {
        this.selectType = type;
        this.$nextTick(() => {
          this.scroll.refresh();
        });
      },
      onToggle(onlyContent) {
        this.onlyContent = onlyContent;
        this.$nextTick(() => {
          this.scroll.refresh();
        });
      }
    },
    filters: {
      formateDate(time) {
        let date = new Date(time);
        return formatDate(date, 'yyyy-MM-dd hh:mm');
      }
    },
    components: {
      cartcontrol,
      split,
      ratingselect
    }
  };
</script>

<style lang="stylus" rel="stylesheet/stylus">
  @import "../../common/stylus/mixin.styl"

  .food
    position: fixed
    left: 0
    top: 0
    bottom: 48px
    width: 100%
    z-index: 30
    background: #fff
    &.move-enter-active, &.move-leave-active
      transition: all 0.5s linear
    &.move-enter, &.move-leave-to
      opacity: 0
      transform: translate3d(100%, 0, 0)
    .image-header
      position: relative
      width: 100%
      height: 0
      padding-top: 100%
      img
        position: absolute
        top: 0
        left: 0
        width: 100%
        height: 100%
      .back
        position: absolute
        top: 10px
        left: 0
        .icon-arrow_lift
          display: block
          padding: 10px
          font-size: 10px
          color: #fff
    .content
      position: relative
      padding: 18px
      .title
        line-height: 14px
        margin-bottom: 8px
        font-size: 14px
        font-weight: 700
        color: rgb(7, 17, 27)
      .detail
        margin-bottom: 18px
        height: 10px
        line-height: 10px
        font-size: 0
        .sell-count, .rating
          font-size: 10px
          color: rgb(147, 153, 159)
        .sell-count
          margin-right: 12px
      .price
        font-weight: 700
        line-height: 24px
        .now
          margin-right: 8px
          font-size: 14px
          color: rgb(240, 20, 20)
        .old
          text-decoration: line-through
          font-size: 10px
      .cartcontrol-wrapper
        position: absolute
        right: 12px
        bottom: 12px
        &.fade-enter-active, &.fade-leave-active
          transition: all 0.5s linear
        &.fade-enter, &.fade-leave-to
          opacity: 0
      .buy
        position: absolute
        right: 18px
        bottom: 18px
        z-index: 10
        height: 24px
        line-height: 24px
        padding: 0 12px
        box-sizing: border-box
        border-radius: 12px
        font-size: 10px
        color: #fff
        background: rgb(0, 160, 220)
    .info
      padding: 18px
      .title
        line-height: 14px
        margin-bottom: 6px
        font-size: 14px
        color: rgb(7, 17, 27)
      .text
        line-height: 24px
        padding: 0 8px
        font-size: 12px
        color: rgb(77, 85, 93)
    .rating
      padding-top: 18px
      .title
        line-height: 14px
        margin-left: 12px
        font-size: 14px
        color: rgb(7, 17, 27)
    .rating-wrapper
      padding: 0 18px
      .rating-item
        position: relative
        padding: 16px 0
        border-1px(rgba(7, 17, 27, 0.1))
        .user
          position: absolute
          right: 0
          top: 16px
          line-height: 12px
          font-size: 0
          .name
            display: inline-block
            margin-right: 6px
            vertical-align: top
            font-size: 10px
            color: rgb(147, 153, 159)
          .avatar
            border-radius: 50%
        .time
          margin-bottom: 6px
          line-height: 12px
          font-size: 10px
          color: rgb(147, 153, 159)
        .text
          line-height: 16px
          font-size: 12px
          color: rgb(7, 17, 27)
          .icon-thumb_up, .icon-thumb_down
            margin-right: 4px
            font-size: 12px
          .icon-thumb_up
            color: rgb(0, 160, 220)
          .icon-thumb_down
            color: rgb(147, 153, 159)
      .no-rating
        padding: 16px 0
        font-size: 12px
        color: rgb(147, 153, 159)
</style>
